The tragic death toll left behind by the blizzard of 2013 is now up to seven. An 11-year-old boy died Saturday, Feb. 9, after snowstorm Nemo dumped more than two feet of snow over the Boston, Mass. area. The Dorchester county victim was helping his father clear a path for their car when he became too cold and decided to sit inside of the vehicle. The car's exhaust pipe was still blocked by snow, causing the running vehicle to fill with carbon monoxide. The hazardous gas left the boy unconscious. He was transported to Boston Medical Center where he was pronounced dead. The father of the 11-year-old victim was also treated for a heart attack.